Resolution of temporal and spatial ambiguities of intensity variations within pulsating aurorae

Details Resolution of temporal and spatial ambiguities of intensity variations within pulsating aurorae Resolution of temporal and spatial ambiguities of intensity variations within pulsating aurorae

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....9714877k&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. A10, p. 14,877-14,883.

Physics

2

Auroras, Imaging Techniques, Luminous Intensity, Variations, Geomagnetic Pulsations, Television Systems

Scientific paper

Systems for imaging optical emissions all have a detection sensitivity which, be it uniform or not, can make image interpretation very difficult. A time differential technique involving pixel by pixel subtraction of successive images has been developed to overcome this problem. The technique has been applied to images of pulsating aurorae recorded with a low-light-level television system. Individual auroral forms exhibit within a short interval of time a diversity of pulsation modes not evident by direct visual inspection of the television images. The results are important for possible source mechanisms or any meaningful classification scheme for pulsating aurorae.

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